The Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC) for Biogeochemical Dynamics is operated by the ORNL Environmental Sciences Division (ESD) as part of the National Aeronautics and Space Administration's (NASA) Earth Science Enterprise (ESE) program. The ORNL DAAC archives data and model products related to biogeochemical dynamics which are the result of the interactions between the biological, geological, and chemical components of the Earth's environment.

As components of the Earth Observing System (EOS) Data Information System (EOSDIS), DAACs generate EOS standard data products and carry out NASA's responsibilities for data archival, distribution, and management. Many of these sites also carry related data products that pre-date EOS. DAACs and affiliated data centers have home pages and FTP sites for transfer of information and data.

• ORNL DAAC Staff: Our staff is made up of people working to help you get good quality products easily.
• Where We Are: Look here for travel information on visiting the ORNL DAAC or see these maps: Oak Ridge/Knoxville Airport Route Map and Oak Ridge/Knoxville Map . (Download Adobe Acrobat Reader.)
• User Working Group: The user working group guides the DAAC in assembling data and model products needed in biogeochemical studies to address global environmental change issues.